Improvement in stop-valves



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Letters (Pctte'nt No. WALES, dated-May 5, 18.684.

IMPROVEMENT IN STOP-VALVES.

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To ALLWHOM 1T MAY eo'rmnniv:4

Be it known that I, SILAS H. BROWN, of Troy,in`the county of Rensselaer, and tateof New York, have Y 'invented a new Improved Stop-Valve or Gate; and I do hereby declare that the following is a full and exact description of the construction and operation of the same, reference being had to the-annexed drawings, and to the letters of reference marked thereon, forming a part of this specification, in which Figure l is a longitudinal vertical section of saidimproved stop-valve,

Figure 2 is a transverse vertical section, and

Figure 3 is a perspective view of the valve and its closing brace-lever, as removedfrom its chamber.'

The same letters refe'ftolike parts in each oi' the said figures.

My said invention and improvement consist inthe construction and employmeht of a movable brace-lever, hinged to-and operating in combination with a valve. or gate, its seat, chamber, `and stenior rod, in manner substantially as hereinafter fully described and shown, for the purpose'of shutting the said valve or gate peifectly tight on or against its seat, at-the completion of its closing movement, and keep itvso shut until its opening movement again commences, which then relieves said valve of the shutting-pressure of said closing brace-lever, to allow of its being easily opened. v i

By this invention :ndimprovement a simpleand eiective closing and tightening-device is constructed and applied to the stop-valvesior 'gates of water, steam, and gas-pipes, which, at the end of the vaivesv closing movement byits stem, sets, holds, and braces the same tight to its-seat, thus completely preventing any leakage of fluids, gases,.or vapors therefrom.

To enable others skilled in the art to make and use my said invention, I now proceed to fully describe' its construction and operation, as follows:

In the annexed drawings, AA, in fig. 1, represents a valve-box or chamber of a pipe, d, which has a iiuslr or lcv-el valve-seat, H, and closing on and against this seat is a. valve or gate, B, which is movedvoil` and on its seat, or opened therefrom, and closed thereon, either to opener to stop thepass'age-way of the pipe-or chamber,

by meansoi` its stem, D,provided with a screw-thread, of suitable pitch to operate effectually said valve, arid this stem is adapted to and is operated,l`hy means of its hand-wheel or handle at its top, in its corresponding pitch of female-screw thread in the standard or neck F, and is connectedwith the aforesaid valve by means of a shouldered head, turning within a socket or'jaws, au, formed on .or attached to the aforesaid'valve :Bi n A manner substantially as shown in said drawings.

` Aiiixed to or formed on said valve B is a socket or lever-brace holding-jaws, 5 b', with a slot across its face, and attached or hinged to said valve Bris a lever-brace, C, which is constructed withjournals, e e, at its valve end, and with a cross-head guide, Gr, at its oppositeend. This brace-lever is connected to the aforesaid valve by passing its journal-cndinto and betweenpthe holding-jaws 6 b', which the aforesaid slot therein admits .of so doing, by receivingvthe shank or bar C, which then may drop into anotch made in the under holding-jaw, 12', so that the said lever or brace-bar C is thus simply and eiiectually hinged to thesaid valve or gate-B, and so as to successfully accomplish its intended purpose in connection therewith.

On each side of the aforesaid valve-chamber or box A A, there are made suitablefguide-grooves or shoul ders, E E, or theirv equivalent devices, which are respectively inclined or curved from their lower parts upward andA toward the valve-seat H. The degree orameunt of this declina-tion from a vertical or a parallel to said valve-seat H is, suiiicient when it serves to keep the cross-head guide-ends vGr of .said .brace-lever, which has its movements in said shouldered.y guides or grooves, tirmly down o n itsseat-at the bottom of said inclined or curved shouldered grooves, viso that a iirm bearing' or fulcrum is had -to cause the said lever-brace C, when adtuated by the valve-stem D, to press or brace the valve tightly onA and against its seat H, and to'hold it 'thereon without liability of the fulcrumi-end Gr of. said brace-lever slipping off or up from itsseat in said grooves to relax its closing pressure on said valve.

Whenever the valve B is moved, or opened, or closed, the aforesaid lever-brace moves with it, the 'guidend l i p 77,448

G thereof moving within lseid shoulder-grooves, in manner as show n in fig. 2, which represents said valve as fully opened or lifted clear ofvits sent, and thereby leaving an entirely nnobstructed passage-way for the colltents of the pipe. e

Instead of a vsci-evv-stem being usedto ra be used. y

What I clnimns'my'invention, and desire to secure by Letters Patent, is

ise and lovrer the valve, o plain stem with a. lever-handle may In combination 'Withinl valve, B,a.nd its aetueting-stem D, I claim a. movable o1' sliding-lever brace,`0, so attached to and opeljtingwith the valve,`thnt when said valve is closed, said lever braces it tight on its sent,

.andlwhen seid valve is.opened, seid lever moves with it7 so as to leave n n entirely unobstructed 'passage-way within the pipe, in manner substantially as herein described, and for the purpose asset forth.

Also, in combination with said valve B, its stem D,fo.nd sliding brace-lever C, I claim the grooves or shoiiL v ders E E of thevalve-chamber'A, saidgrooves or shoulders being inclined relatively to the valve-setti'. H,`sub

stantially as and for the purposes described. n

Also, I claim the'combinston and arrangement of the valve B, its stem D, the sliding, movable brace-lever 0,. and the grooves or shoulders E E, when applied in manner substantially as described, and operating'for thel purposes as Set'Orth.'

SILAS H. BROWN.

Witnesses:

J. J. SAVAGE, J. L.V BARNEY. 

